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The stopping potential for the photo-ele...

The stopping potential for the photo-electrons emitted from a metal surface of work-function 1.7 eV is 10.4 eV. Find the wavelength of the radiation used. Also identify the energy-levels in hydrogen atom which will emit this wavelength.

A

The wave length of light used is 1022 Å

B

The wavelength of light used is 970.6 Å

C

The ligth used is emitted by hydrogen gas sample which de-excited from n=3 to n=1

D

The ligth used is emitted by hydrogen gas sample which de-excited from n=4 to n=1

Text Solution

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The correct Answer is:
1,3
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